/* Deal with I/O statements & related stuff.
- Copyright (C) 2000-2019 Free Software Foundation, Inc.
+ Copyright (C) 2000-2021 Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of GCC.
#define RESOLVE_TAG(x, y) if (!resolve_tag (x, y)) return false;
-/* Are we currently processing an asynchronous I/O statement? */
-
-bool async_io_dt;
-
/**************** Fortran 95 FORMAT parser *****************/
/* FORMAT tokens returned by format_lex(). */
}
-/* Check for a CHARACTER variable. The check for scalar is done in
- resolve_tag. */
-
-static bool
-check_char_variable (gfc_expr *e)
-{
- if (e->expr_type != EXPR_VARIABLE || e->ts.type != BT_CHARACTER)
- {
- gfc_error("IOMSG must be a scalar-default-char-variable at %L", &e->where);
- return false;
- }
- return true;
-}
-
-
-static bool
-is_char_type (const char *name, gfc_expr *e)
-{
- gfc_resolve_expr (e);
-
- if (e->ts.type != BT_CHARACTER)
- {
- gfc_error ("%s requires a scalar-default-char-expr at %L",
- name, &e->where);
- return false;
- }
- return true;
-}
-
-
/* Match an expression I/O tag of some sort. */
static match
if (e->value.constructor == NULL)
{
- gfc_error ("FORMAT tag at %C cannot be a zero-sized array");
+ gfc_error ("FORMAT tag at %L cannot be a zero-sized array",
+ &e->where);
return false;
}
match m;
m = match_etag (&tag_e_async, &open->asynchronous);
- if (m == MATCH_YES && !is_char_type ("ASYNCHRONOUS", open->asynchronous))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
m = match_etag (&tag_unit, &open->unit);
if (m != MATCH_NO)
return m;
m = match_etag (&tag_iomsg, &open->iomsg);
- if (m == MATCH_YES && !check_char_variable (open->iomsg))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
m = match_out_tag (&tag_iostat, &open->iostat);
}
+static int
+compare_to_allowed_values (const char *specifier, const char *allowed[],
+ const char *allowed_f2003[],
+ const char *allowed_gnu[], gfc_char_t *value,
+ const char *statement, bool warn, locus *where,
+ int *num = NULL);
+
+
+static bool
+check_open_constraints (gfc_open *open, locus *where);
+
/* Resolve everything in a gfc_open structure. */
bool
-gfc_resolve_open (gfc_open *open)
+gfc_resolve_open (gfc_open *open, locus *where)
{
-
RESOLVE_TAG (&tag_unit, open->unit);
RESOLVE_TAG (&tag_iomsg, open->iomsg);
RESOLVE_TAG (&tag_iostat, open->iostat);
if (!gfc_reference_st_label (open->err, ST_LABEL_TARGET))
return false;
- return true;
+ return check_open_constraints (open, where);
}
allowed in F95 or F2003, issuing an error message and returning a zero
value if it is not allowed. */
-static int
-compare_to_allowed_values (const char *specifier, const char *allowed[],
- const char *allowed_f2003[],
- const char *allowed_gnu[], gfc_char_t *value,
- const char *statement, bool warn,
- int *num = NULL);
-
static int
compare_to_allowed_values (const char *specifier, const char *allowed[],
- const char *allowed_f2003[],
+ const char *allowed_f2003[],
const char *allowed_gnu[], gfc_char_t *value,
- const char *statement, bool warn, int *num)
+ const char *statement, bool warn, locus *where,
+ int *num)
{
int i;
unsigned int len;
return 1;
}
+ if (!where)
+ where = &gfc_current_locus;
+
for (i = 0; allowed_f2003 && allowed_f2003[i]; i++)
if (len == strlen (allowed_f2003[i])
&& gfc_wide_strncasecmp (value, allowed_f2003[i],
if (n == WARNING || (warn && n == ERROR))
{
- gfc_warning (0, "Fortran 2003: %s specifier in %s statement at %C "
- "has value %qs", specifier, statement,
+ gfc_warning (0, "Fortran 2003: %s specifier in %s statement at %L "
+ "has value %qs", specifier, statement, where,
allowed_f2003[i]);
return 1;
}
if (n == ERROR)
{
gfc_notify_std (GFC_STD_F2003, "%s specifier in "
- "%s statement at %C has value %qs", specifier,
- statement, allowed_f2003[i]);
+ "%s statement at %L has value %qs", specifier,
+ statement, where, allowed_f2003[i]);
return 0;
}
if (n == WARNING || (warn && n == ERROR))
{
- gfc_warning (0, "Extension: %s specifier in %s statement at %C "
- "has value %qs", specifier, statement,
+ gfc_warning (0, "Extension: %s specifier in %s statement at %L "
+ "has value %qs", specifier, statement, where,
allowed_gnu[i]);
return 1;
}
if (n == ERROR)
{
gfc_notify_std (GFC_STD_GNU, "%s specifier in "
- "%s statement at %C has value %qs", specifier,
- statement, allowed_gnu[i]);
+ "%s statement at %L has value %qs", specifier,
+ statement, where, allowed_gnu[i]);
return 0;
}
{
char *s = gfc_widechar_to_char (value, -1);
gfc_warning (0,
- "%s specifier in %s statement at %C has invalid value %qs",
- specifier, statement, s);
+ "%s specifier in %s statement at %L has invalid value %qs",
+ specifier, statement, where, s);
free (s);
return 1;
}
else
{
char *s = gfc_widechar_to_char (value, -1);
- gfc_error ("%s specifier in %s statement at %C has invalid value %qs",
- specifier, statement, s);
+ gfc_error ("%s specifier in %s statement at %L has invalid value %qs",
+ specifier, statement, where, s);
free (s);
return 0;
}
}
-/* Match an OPEN statement. */
+/* Check constraints on the OPEN statement.
+ Similar to check_io_constraints for data transfer statements.
+ At this point all tags have already been resolved via resolve_tag, which,
+ among other things, verifies that BT_CHARACTER tags are of default kind. */
-match
-gfc_match_open (void)
+static bool
+check_open_constraints (gfc_open *open, locus *where)
{
- gfc_open *open;
- match m;
- bool warn;
-
- m = gfc_match_char ('(');
- if (m == MATCH_NO)
- return m;
-
- open = XCNEW (gfc_open);
-
- m = match_open_element (open);
-
- if (m == MATCH_ERROR)
- goto cleanup;
- if (m == MATCH_NO)
- {
- m = gfc_match_expr (&open->unit);
- if (m == MATCH_ERROR)
- goto cleanup;
- }
-
- for (;;)
- {
- if (gfc_match_char (')') == MATCH_YES)
- break;
- if (gfc_match_char (',') != MATCH_YES)
- goto syntax;
-
- m = match_open_element (open);
- if (m == MATCH_ERROR)
- goto cleanup;
- if (m == MATCH_NO)
- goto syntax;
- }
-
- if (gfc_match_eos () == MATCH_NO)
- goto syntax;
-
- if (gfc_pure (NULL))
- {
- gfc_error ("OPEN statement not allowed in PURE procedure at %C");
- goto cleanup;
- }
-
- gfc_unset_implicit_pure (NULL);
+#define warn_or_error(...) \
+{ \
+ if (warn) \
+ gfc_warning (0, __VA_ARGS__); \
+ else \
+ { \
+ gfc_error (__VA_ARGS__); \
+ return false; \
+ } \
+}
- warn = (open->err || open->iostat) ? true : false;
+ bool warn = (open->err || open->iostat) ? true : false;
/* Checks on the ACCESS specifier. */
if (open->access && open->access->expr_type == EXPR_CONSTANT)
static const char *access_f2003[] = { "STREAM", NULL };
static const char *access_gnu[] = { "APPEND", NULL };
- if (!is_char_type ("ACCESS", open->access))
- goto cleanup;
-
if (!compare_to_allowed_values ("ACCESS", access_f95, access_f2003,
access_gnu,
open->access->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->access->where))
+ return false;
}
/* Checks on the ACTION specifier. */
gfc_char_t *str = open->action->value.character.string;
static const char *action[] = { "READ", "WRITE", "READWRITE", NULL };
- if (!is_char_type ("ACTION", open->action))
- goto cleanup;
-
if (!compare_to_allowed_values ("ACTION", action, NULL, NULL,
- str, "OPEN", warn))
- goto cleanup;
+ str, "OPEN", warn, &open->action->where))
+ return false;
/* With READONLY, only allow ACTION='READ'. */
if (open->readonly && (gfc_wide_strlen (str) != 4
|| gfc_wide_strncasecmp (str, "READ", 4) != 0))
{
- gfc_error ("ACTION type conflicts with READONLY specifier at %C");
- goto cleanup;
+ gfc_error ("ACTION type conflicts with READONLY specifier at %L",
+ &open->action->where);
+ return false;
}
}
+
/* If we see READONLY and no ACTION, set ACTION='READ'. */
else if (open->readonly && open->action == NULL)
{
/* Checks on the ASYNCHRONOUS specifier. */
if (open->asynchronous)
{
- if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("ASYNCHRONOUS", open->asynchronous))
- goto cleanup;
-
- if (open->asynchronous->ts.kind != 1)
- {
- gfc_error ("ASYNCHRONOUS= specifier at %L must be of default "
- "CHARACTER kind", &open->asynchronous->where);
- return MATCH_ERROR;
- }
-
- if (open->asynchronous->expr_type == EXPR_ARRAY
- || open->asynchronous->expr_type == EXPR_STRUCTURE)
- {
- gfc_error ("ASYNCHRONOUS= specifier at %L must be scalar",
- &open->asynchronous->where);
- return MATCH_ERROR;
- }
+ if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS= at %L "
+ "not allowed in Fortran 95",
+ &open->asynchronous->where))
+ return false;
if (open->asynchronous->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("ASYNCHRONOUS", asynchronous,
NULL, NULL, open->asynchronous->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->asynchronous->where))
+ return false;
}
}
/* Checks on the BLANK specifier. */
if (open->blank)
{
- if (!gfc_notify_std (GFC_STD_F2003, "BLANK= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("BLANK", open->blank))
- goto cleanup;
+ if (!gfc_notify_std (GFC_STD_F2003, "BLANK= at %L "
+ "not allowed in Fortran 95", &open->blank->where))
+ return false;
if (open->blank->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("BLANK", blank, NULL, NULL,
open->blank->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->blank->where))
+ return false;
}
}
/* Checks on the CARRIAGECONTROL specifier. */
- if (open->cc)
+ if (open->cc && open->cc->expr_type == EXPR_CONSTANT)
{
- if (!is_char_type ("CARRIAGECONTROL", open->cc))
- goto cleanup;
-
- if (open->cc->expr_type == EXPR_CONSTANT)
- {
- static const char *cc[] = { "LIST", "FORTRAN", "NONE", NULL };
- if (!compare_to_allowed_values ("CARRIAGECONTROL", cc, NULL, NULL,
- open->cc->value.character.string,
- "OPEN", warn))
- goto cleanup;
- }
+ static const char *cc[] = { "LIST", "FORTRAN", "NONE", NULL };
+ if (!compare_to_allowed_values ("CARRIAGECONTROL", cc, NULL, NULL,
+ open->cc->value.character.string,
+ "OPEN", warn, &open->cc->where))
+ return false;
}
/* Checks on the DECIMAL specifier. */
if (open->decimal)
{
- if (!gfc_notify_std (GFC_STD_F2003, "DECIMAL= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("DECIMAL", open->decimal))
- goto cleanup;
+ if (!gfc_notify_std (GFC_STD_F2003, "DECIMAL= at %L "
+ "not allowed in Fortran 95", &open->decimal->where))
+ return false;
if (open->decimal->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("DECIMAL", decimal, NULL, NULL,
open->decimal->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->decimal->where))
+ return false;
}
}
{
static const char *delim[] = { "APOSTROPHE", "QUOTE", "NONE", NULL };
- if (!is_char_type ("DELIM", open->delim))
- goto cleanup;
-
if (!compare_to_allowed_values ("DELIM", delim, NULL, NULL,
open->delim->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->delim->where))
+ return false;
}
}
/* Checks on the ENCODING specifier. */
if (open->encoding)
{
- if (!gfc_notify_std (GFC_STD_F2003, "ENCODING= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("ENCODING", open->encoding))
- goto cleanup;
+ if (!gfc_notify_std (GFC_STD_F2003, "ENCODING= at %L "
+ "not allowed in Fortran 95", &open->encoding->where))
+ return false;
if (open->encoding->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("ENCODING", encoding, NULL, NULL,
open->encoding->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->encoding->where))
+ return false;
}
}
{
static const char *form[] = { "FORMATTED", "UNFORMATTED", NULL };
- if (!is_char_type ("FORM", open->form))
- goto cleanup;
-
if (!compare_to_allowed_values ("FORM", form, NULL, NULL,
open->form->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->form->where))
+ return false;
}
/* Checks on the PAD specifier. */
{
static const char *pad[] = { "YES", "NO", NULL };
- if (!is_char_type ("PAD", open->pad))
- goto cleanup;
-
if (!compare_to_allowed_values ("PAD", pad, NULL, NULL,
open->pad->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->pad->where))
+ return false;
}
/* Checks on the POSITION specifier. */
{
static const char *position[] = { "ASIS", "REWIND", "APPEND", NULL };
- if (!is_char_type ("POSITION", open->position))
- goto cleanup;
-
if (!compare_to_allowed_values ("POSITION", position, NULL, NULL,
open->position->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->position->where))
+ return false;
}
/* Checks on the ROUND specifier. */
if (open->round)
{
- if (!gfc_notify_std (GFC_STD_F2003, "ROUND= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("ROUND", open->round))
- goto cleanup;
+ if (!gfc_notify_std (GFC_STD_F2003, "ROUND= at %L "
+ "not allowed in Fortran 95", &open->round->where))
+ return false;
if (open->round->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("ROUND", round, NULL, NULL,
open->round->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->round->where))
+ return false;
}
}
/* Checks on the SHARE specifier. */
- if (open->share)
+ if (open->share && open->share->expr_type == EXPR_CONSTANT)
{
- if (!is_char_type ("SHARE", open->share))
- goto cleanup;
-
- if (open->share->expr_type == EXPR_CONSTANT)
- {
- static const char *share[] = { "DENYNONE", "DENYRW", NULL };
- if (!compare_to_allowed_values ("SHARE", share, NULL, NULL,
- open->share->value.character.string,
- "OPEN", warn))
- goto cleanup;
- }
+ static const char *share[] = { "DENYNONE", "DENYRW", NULL };
+ if (!compare_to_allowed_values ("SHARE", share, NULL, NULL,
+ open->share->value.character.string,
+ "OPEN", warn, &open->share->where))
+ return false;
}
/* Checks on the SIGN specifier. */
- if (open->sign)
+ if (open->sign)
{
- if (!gfc_notify_std (GFC_STD_F2003, "SIGN= at %C "
- "not allowed in Fortran 95"))
- goto cleanup;
-
- if (!is_char_type ("SIGN", open->sign))
- goto cleanup;
+ if (!gfc_notify_std (GFC_STD_F2003, "SIGN= at %L "
+ "not allowed in Fortran 95", &open->sign->where))
+ return false;
if (open->sign->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("SIGN", sign, NULL, NULL,
open->sign->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->sign->where))
+ return false;
}
}
-#define warn_or_error(...) \
-{ \
- if (warn) \
- gfc_warning (0, __VA_ARGS__); \
- else \
- { \
- gfc_error (__VA_ARGS__); \
- goto cleanup; \
- } \
-}
-
/* Checks on the RECL specifier. */
if (open->recl && open->recl->expr_type == EXPR_CONSTANT
&& open->recl->ts.type == BT_INTEGER
&& mpz_sgn (open->recl->value.integer) != 1)
{
- warn_or_error ("RECL in OPEN statement at %C must be positive");
+ warn_or_error (G_("RECL in OPEN statement at %L must be positive"),
+ &open->recl->where);
}
/* Checks on the STATUS specifier. */
static const char *status[] = { "OLD", "NEW", "SCRATCH",
"REPLACE", "UNKNOWN", NULL };
- if (!is_char_type ("STATUS", open->status))
- goto cleanup;
-
if (!compare_to_allowed_values ("STATUS", status, NULL, NULL,
open->status->value.character.string,
- "OPEN", warn))
- goto cleanup;
+ "OPEN", warn, &open->status->where))
+ return false;
/* F2003, 9.4.5: If the STATUS= specifier has the value NEW or REPLACE,
the FILE= specifier shall appear. */
{
char *s = gfc_widechar_to_char (open->status->value.character.string,
-1);
- warn_or_error ("The STATUS specified in OPEN statement at %C is "
- "%qs and no FILE specifier is present", s);
+ warn_or_error (G_("The STATUS specified in OPEN statement at %L is "
+ "%qs and no FILE specifier is present"),
+ &open->status->where, s);
free (s);
}
if (gfc_wide_strncasecmp (open->status->value.character.string,
"scratch", 7) == 0 && open->file)
{
- warn_or_error ("The STATUS specified in OPEN statement at %C "
+ warn_or_error (G_("The STATUS specified in OPEN statement at %L "
"cannot have the value SCRATCH if a FILE specifier "
- "is present");
+ "is present"), &open->status->where);
}
}
{
if (open->unit)
{
- gfc_error ("UNIT specifier not allowed with NEWUNIT at %C");
- goto cleanup;
+ gfc_error ("UNIT specifier not allowed with NEWUNIT at %L",
+ &open->newunit->where);
+ return false;
}
if (!open->file &&
"scratch", 7) != 0)))
{
gfc_error ("NEWUNIT specifier must have FILE= "
- "or STATUS='scratch' at %C");
- goto cleanup;
+ "or STATUS='scratch' at %L", &open->newunit->where);
+ return false;
}
}
else if (!open->unit)
{
- gfc_error ("OPEN statement at %C must have UNIT or NEWUNIT specified");
- goto cleanup;
+ gfc_error ("OPEN statement at %L must have UNIT or NEWUNIT specified",
+ where);
+ return false;
}
/* Things that are not allowed for unformatted I/O. */
&& gfc_wide_strncasecmp (open->form->value.character.string,
"unformatted", 11) == 0)
{
- const char *spec = (open->delim ? "DELIM "
- : (open->pad ? "PAD " : open->blank
- ? "BLANK " : ""));
+ locus *loc;
+ const char *spec;
+ if (open->delim)
+ {
+ loc = &open->delim->where;
+ spec = "DELIM ";
+ }
+ else if (open->pad)
+ {
+ loc = &open->pad->where;
+ spec = "PAD ";
+ }
+ else if (open->blank)
+ {
+ loc = &open->blank->where;
+ spec = "BLANK ";
+ }
+ else
+ {
+ loc = where;
+ spec = "";
+ }
- warn_or_error ("%s specifier at %C not allowed in OPEN statement for "
- "unformatted I/O", spec);
+ warn_or_error (G_("%s specifier at %L not allowed in OPEN statement for "
+ "unformatted I/O"), spec, loc);
}
if (open->recl && open->access && open->access->expr_type == EXPR_CONSTANT
&& gfc_wide_strncasecmp (open->access->value.character.string,
"stream", 6) == 0)
{
- warn_or_error ("RECL specifier not allowed in OPEN statement at %C for "
- "stream I/O");
+ warn_or_error (G_("RECL specifier not allowed in OPEN statement at %L for "
+ "stream I/O"), &open->recl->where);
}
if (open->position
|| gfc_wide_strncasecmp (open->access->value.character.string,
"append", 6) == 0))
{
- warn_or_error ("POSITION specifier in OPEN statement at %C only allowed "
- "for stream or sequential ACCESS");
+ warn_or_error (G_("POSITION specifier in OPEN statement at %L only allowed "
+ "for stream or sequential ACCESS"), &open->position->where);
}
+ return true;
#undef warn_or_error
+}
+
+
+/* Match an OPEN statement. */
+
+match
+gfc_match_open (void)
+{
+ gfc_open *open;
+ match m;
+
+ m = gfc_match_char ('(');
+ if (m == MATCH_NO)
+ return m;
+
+ open = XCNEW (gfc_open);
+
+ m = match_open_element (open);
+
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ if (m == MATCH_NO)
+ {
+ m = gfc_match_expr (&open->unit);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ }
+
+ for (;;)
+ {
+ if (gfc_match_char (')') == MATCH_YES)
+ break;
+ if (gfc_match_char (',') != MATCH_YES)
+ goto syntax;
+
+ m = match_open_element (open);
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ if (m == MATCH_NO)
+ goto syntax;
+ }
+
+ if (gfc_match_eos () == MATCH_NO)
+ goto syntax;
+
+ if (gfc_pure (NULL))
+ {
+ gfc_error ("OPEN statement not allowed in PURE procedure at %C");
+ goto cleanup;
+ }
+
+ gfc_unset_implicit_pure (NULL);
new_st.op = EXEC_OPEN;
new_st.ext.open = open;
if (m != MATCH_NO)
return m;
m = match_etag (&tag_iomsg, &close->iomsg);
- if (m == MATCH_YES && !check_char_variable (close->iomsg))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
m = match_out_tag (&tag_iostat, &close->iostat);
{
gfc_close *close;
match m;
- bool warn;
m = gfc_match_char ('(');
if (m == MATCH_NO)
gfc_unset_implicit_pure (NULL);
- warn = (close->iostat || close->err) ? true : false;
-
- /* Checks on the STATUS specifier. */
- if (close->status && close->status->expr_type == EXPR_CONSTANT)
- {
- static const char *status[] = { "KEEP", "DELETE", NULL };
-
- if (!is_char_type ("STATUS", close->status))
- goto cleanup;
-
- if (!compare_to_allowed_values ("STATUS", status, NULL, NULL,
- close->status->value.character.string,
- "CLOSE", warn))
- goto cleanup;
- }
-
new_st.op = EXEC_CLOSE;
new_st.ext.close = close;
return MATCH_YES;
}
-/* Resolve everything in a gfc_close structure. */
-
-bool
-gfc_resolve_close (gfc_close *close)
+static bool
+check_close_constraints (gfc_close *close, locus *where)
{
- RESOLVE_TAG (&tag_unit, close->unit);
- RESOLVE_TAG (&tag_iomsg, close->iomsg);
- RESOLVE_TAG (&tag_iostat, close->iostat);
- RESOLVE_TAG (&tag_status, close->status);
-
- if (!gfc_reference_st_label (close->err, ST_LABEL_TARGET))
- return false;
+ bool warn = (close->iostat || close->err) ? true : false;
if (close->unit == NULL)
{
- /* Find a locus from one of the arguments to close, when UNIT is
- not specified. */
- locus loc = gfc_current_locus;
- if (close->status)
- loc = close->status->where;
- else if (close->iostat)
- loc = close->iostat->where;
- else if (close->iomsg)
- loc = close->iomsg->where;
- else if (close->err)
- loc = close->err->where;
-
- gfc_error ("CLOSE statement at %L requires a UNIT number", &loc);
+ gfc_error ("CLOSE statement at %L requires a UNIT number", where);
return false;
}
&close->unit->where);
}
+ /* Checks on the STATUS specifier. */
+ if (close->status && close->status->expr_type == EXPR_CONSTANT)
+ {
+ static const char *status[] = { "KEEP", "DELETE", NULL };
+
+ if (!compare_to_allowed_values ("STATUS", status, NULL, NULL,
+ close->status->value.character.string,
+ "CLOSE", warn, &close->status->where))
+ return false;
+ }
+
return true;
}
+/* Resolve everything in a gfc_close structure. */
+
+bool
+gfc_resolve_close (gfc_close *close, locus *where)
+{
+ RESOLVE_TAG (&tag_unit, close->unit);
+ RESOLVE_TAG (&tag_iomsg, close->iomsg);
+ RESOLVE_TAG (&tag_iostat, close->iostat);
+ RESOLVE_TAG (&tag_status, close->status);
+
+ if (!gfc_reference_st_label (close->err, ST_LABEL_TARGET))
+ return false;
+
+ return check_close_constraints (close, where);
+}
+
/* Free a gfc_filepos structure. */
if (m != MATCH_NO)
return m;
m = match_etag (&tag_iomsg, &fp->iomsg);
- if (m == MATCH_YES && !check_char_variable (fp->iomsg))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
m = match_out_tag (&tag_iostat, &fp->iostat);
}
m = match_etag (&tag_e_async, &dt->asynchronous);
- if (m == MATCH_YES && !is_char_type ("ASYNCHRONOUS", dt->asynchronous))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
m = match_etag (&tag_e_blank, &dt->blank);
if (m != MATCH_NO)
return m;
m = match_etag (&tag_iomsg, &dt->iomsg);
- if (m == MATCH_YES && !check_char_variable (dt->iomsg))
- return MATCH_ERROR;
if (m != MATCH_NO)
return m;
}
+static const char *
+io_kind_name (io_kind k);
+
+static bool
+check_io_constraints (io_kind k, gfc_dt *dt, gfc_code *io_code,
+ locus *spec_end);
+
/* Resolve everything in a gfc_dt structure. */
bool
-gfc_resolve_dt (gfc_dt *dt, locus *loc)
+gfc_resolve_dt (gfc_code *dt_code, gfc_dt *dt, locus *loc)
{
gfc_expr *e;
io_kind k;
- locus tmp;
/* This is set in any case. */
gcc_assert (dt->dt_io_kind);
k = dt->dt_io_kind->value.iokind;
- tmp = gfc_current_locus;
- gfc_current_locus = *loc;
- if (!resolve_tag (&tag_format, dt->format_expr))
- {
- gfc_current_locus = tmp;
- return false;
- }
- gfc_current_locus = tmp;
-
+ RESOLVE_TAG (&tag_format, dt->format_expr);
RESOLVE_TAG (&tag_rec, dt->rec);
RESOLVE_TAG (&tag_spos, dt->pos);
RESOLVE_TAG (&tag_advance, dt->advance);
RESOLVE_TAG (&tag_e_decimal, dt->decimal);
RESOLVE_TAG (&tag_e_async, dt->asynchronous);
+ /* Check I/O constraints.
+ To validate NAMELIST we need to check if we were also given an I/O list,
+ which is stored in code->block->next with op EXEC_TRANSFER.
+ Note that the I/O list was already resolved from resolve_transfer. */
+ gfc_code *io_code = NULL;
+ if (dt_code && dt_code->block && dt_code->block->next
+ && dt_code->block->next->op == EXEC_TRANSFER)
+ io_code = dt_code->block->next;
+
+ if (!check_io_constraints (k, dt, io_code, loc))
+ return false;
+
e = dt->io_unit;
if (e == NULL)
{
if (m == MATCH_YES && expr->ts.type == BT_BOZ)
{
- if (gfc_invalid_boz ("BOZ literal constant at %L cannot appear in "
- "an output IO list", &gfc_current_locus))
+ if (gfc_invalid_boz (G_("BOZ literal constant at %L cannot appear in"
+ " an output IO list"), &gfc_current_locus))
return MATCH_ERROR;
if (!gfc_boz2int (expr, gfc_max_integer_kind))
return MATCH_ERROR;
/* Check the constraints for a data transfer statement. The majority of the
- constraints appearing in 9.4 of the standard appear here. Some are handled
- in resolve_tag and others in gfc_resolve_dt. Also set the async_io_dt flag
- and, if necessary, the asynchronous flag on the SIZE argument. */
+ constraints appearing in 9.4 of the standard appear here.
-static match
+ Tag expressions are already resolved by resolve_tag, which includes
+ verifying the type, that they are scalar, and verifying that BT_CHARACTER
+ tags are of default kind. */
+
+static bool
check_io_constraints (io_kind k, gfc_dt *dt, gfc_code *io_code,
locus *spec_end)
{
if ((arg)->lb != NULL)\
gfc_error ((msg), (arg));\
else\
- gfc_error ((msg), &gfc_current_locus);\
- m = MATCH_ERROR;\
+ gfc_error ((msg), spec_end);\
+ return false;\
}
- match m;
gfc_expr *expr;
gfc_symbol *sym = NULL;
bool warn, unformatted;
unformatted = dt->format_expr == NULL && dt->format_label == NULL
&& dt->namelist == NULL;
- m = MATCH_YES;
-
expr = dt->io_unit;
if (expr && expr->expr_type == EXPR_VARIABLE
&& expr->ts.type == BT_CHARACTER)
io_constraint (dt->rec != NULL,
"REC tag at %L is incompatible with internal file",
&dt->rec->where);
-
+
io_constraint (dt->pos != NULL,
"POS tag at %L is incompatible with internal file",
&dt->pos->where);
{
if (!gfc_notify_std (GFC_STD_F2003, "Internal file at %L with "
"namelist", &expr->where))
- m = MATCH_ERROR;
+ return false;
}
io_constraint (dt->advance != NULL,
if (gfc_pure (NULL) && (k == M_READ || k == M_WRITE))
{
- gfc_error ("IO UNIT in %s statement at %C must be "
+ gfc_error ("IO UNIT in %s statement at %L must be "
"an internal file in a PURE procedure",
- io_kind_name (k));
- return MATCH_ERROR;
+ io_kind_name (k), &expr->where);
+ return false;
}
-
+
if (k == M_READ || k == M_WRITE)
gfc_unset_implicit_pure (NULL);
}
- if (k != M_READ)
+ if (dt->asynchronous)
{
- io_constraint (dt->end, "END tag not allowed with output at %L",
- &dt->end_where);
-
- io_constraint (dt->eor, "EOR tag not allowed with output at %L",
- &dt->eor_where);
-
- io_constraint (dt->blank, "BLANK= specifier not allowed with output at %L",
- &dt->blank->where);
-
- io_constraint (dt->pad, "PAD= specifier not allowed with output at %L",
- &dt->pad->where);
-
- io_constraint (dt->size, "SIZE= specifier not allowed with output at %L",
- &dt->size->where);
- }
- else
- {
- io_constraint (dt->size && dt->advance == NULL,
- "SIZE tag at %L requires an ADVANCE tag",
- &dt->size->where);
-
- io_constraint (dt->eor && dt->advance == NULL,
- "EOR tag at %L requires an ADVANCE tag",
- &dt->eor_where);
- }
-
- if (dt->asynchronous)
- {
- int num;
+ int num = -1;
static const char * asynchronous[] = { "YES", "NO", NULL };
+ /* Note: gfc_reduce_init_expr reports an error if not init-expr. */
if (!gfc_reduce_init_expr (dt->asynchronous))
- {
- gfc_error ("ASYNCHRONOUS= specifier at %L must be an initialization "
- "expression", &dt->asynchronous->where);
- return MATCH_ERROR;
- }
-
- if (!is_char_type ("ASYNCHRONOUS", dt->asynchronous))
- return MATCH_ERROR;
-
- if (dt->asynchronous->ts.kind != 1)
- {
- gfc_error ("ASYNCHRONOUS= specifier at %L must be of default "
- "CHARACTER kind", &dt->asynchronous->where);
- return MATCH_ERROR;
- }
-
- if (dt->asynchronous->expr_type == EXPR_ARRAY
- || dt->asynchronous->expr_type == EXPR_STRUCTURE)
- {
- gfc_error ("ASYNCHRONOUS= specifier at %L must be scalar",
- &dt->asynchronous->where);
- return MATCH_ERROR;
- }
+ return false;
if (!compare_to_allowed_values
("ASYNCHRONOUS", asynchronous, NULL, NULL,
dt->asynchronous->value.character.string,
- io_kind_name (k), warn, &num))
- return MATCH_ERROR;
+ io_kind_name (k), warn, &dt->asynchronous->where, &num))
+ return false;
+
+ gcc_checking_assert (num != -1);
- /* Best to put this here because the yes/no info is still around. */
- async_io_dt = num == 0;
- if (async_io_dt && dt->size)
- dt->size->symtree->n.sym->attr.asynchronous = 1;
+ /* For "YES", mark related symbols as asynchronous. */
+ if (num == 0)
+ {
+ /* SIZE variable. */
+ if (dt->size)
+ dt->size->symtree->n.sym->attr.asynchronous = 1;
+
+ /* Variables in a NAMELIST. */
+ if (dt->namelist)
+ for (gfc_namelist *nl = dt->namelist->namelist; nl; nl = nl->next)
+ nl->sym->attr.asynchronous = 1;
+
+ /* Variables in an I/O list. */
+ for (gfc_code *xfer = io_code; xfer && xfer->op == EXEC_TRANSFER;
+ xfer = xfer->next)
+ {
+ gfc_expr *expr = xfer->expr1;
+ while (expr != NULL && expr->expr_type == EXPR_OP
+ && expr->value.op.op == INTRINSIC_PARENTHESES)
+ expr = expr->value.op.op1;
+
+ if (expr && expr->expr_type == EXPR_VARIABLE)
+ expr->symtree->n.sym->attr.asynchronous = 1;
+ }
+ }
}
- else
- async_io_dt = false;
if (dt->id)
{
if (dt->decimal)
{
- if (!gfc_notify_std (GFC_STD_F2003, "DECIMAL= at %C "
- "not allowed in Fortran 95"))
- return MATCH_ERROR;
+ if (!gfc_notify_std (GFC_STD_F2003, "DECIMAL= at %L "
+ "not allowed in Fortran 95", &dt->decimal->where))
+ return false;
if (dt->decimal->expr_type == EXPR_CONSTANT)
{
static const char * decimal[] = { "COMMA", "POINT", NULL };
- if (!is_char_type ("DECIMAL", dt->decimal))
- return MATCH_ERROR;
-
if (!compare_to_allowed_values ("DECIMAL", decimal, NULL, NULL,
dt->decimal->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn,
+ &dt->decimal->where))
+ return false;
io_constraint (unformatted,
"the DECIMAL= specifier at %L must be with an "
"explicit format expression", &dt->decimal->where);
}
}
-
+
if (dt->blank)
{
- if (!gfc_notify_std (GFC_STD_F2003, "BLANK= at %C "
- "not allowed in Fortran 95"))
- return MATCH_ERROR;
-
- if (!is_char_type ("BLANK", dt->blank))
- return MATCH_ERROR;
+ if (!gfc_notify_std (GFC_STD_F2003, "BLANK= at %L "
+ "not allowed in Fortran 95", &dt->blank->where))
+ return false;
if (dt->blank->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("BLANK", blank, NULL, NULL,
dt->blank->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn,
+ &dt->blank->where))
+ return false;
io_constraint (unformatted,
"the BLANK= specifier at %L must be with an "
if (dt->pad)
{
- if (!gfc_notify_std (GFC_STD_F2003, "PAD= at %C "
- "not allowed in Fortran 95"))
- return MATCH_ERROR;
-
- if (!is_char_type ("PAD", dt->pad))
- return MATCH_ERROR;
+ if (!gfc_notify_std (GFC_STD_F2003, "PAD= at %L "
+ "not allowed in Fortran 95", &dt->pad->where))
+ return false;
if (dt->pad->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("PAD", pad, NULL, NULL,
dt->pad->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn,
+ &dt->pad->where))
+ return false;
io_constraint (unformatted,
"the PAD= specifier at %L must be with an "
if (dt->round)
{
- if (!gfc_notify_std (GFC_STD_F2003, "ROUND= at %C "
- "not allowed in Fortran 95"))
- return MATCH_ERROR;
-
- if (!is_char_type ("ROUND", dt->round))
- return MATCH_ERROR;
+ if (!gfc_notify_std (GFC_STD_F2003, "ROUND= at %L "
+ "not allowed in Fortran 95", &dt->round->where))
+ return false;
if (dt->round->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("ROUND", round, NULL, NULL,
dt->round->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn,
+ &dt->round->where))
+ return false;
}
}
-
+
if (dt->sign)
{
/* When implemented, change the following to use gfc_notify_std F2003.
- if (gfc_notify_std (GFC_STD_F2003, "SIGN= at %C "
- "not allowed in Fortran 95") == false)
- return MATCH_ERROR; */
-
- if (!is_char_type ("SIGN", dt->sign))
- return MATCH_ERROR;
+ if (gfc_notify_std (GFC_STD_F2003, "SIGN= at %L "
+ "not allowed in Fortran 95", &dt->sign->where) == false)
+ return false; */
if (dt->sign->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("SIGN", sign, NULL, NULL,
dt->sign->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn, &dt->sign->where))
+ return false;
io_constraint (unformatted,
"SIGN= specifier at %L must be with an "
if (dt->delim)
{
- if (!gfc_notify_std (GFC_STD_F2003, "DELIM= at %C "
- "not allowed in Fortran 95"))
- return MATCH_ERROR;
-
- if (!is_char_type ("DELIM", dt->delim))
- return MATCH_ERROR;
+ if (!gfc_notify_std (GFC_STD_F2003, "DELIM= at %L "
+ "not allowed in Fortran 95", &dt->delim->where))
+ return false;
if (dt->delim->expr_type == EXPR_CONSTANT)
{
if (!compare_to_allowed_values ("DELIM", delim, NULL, NULL,
dt->delim->value.character.string,
- io_kind_name (k), warn))
- return MATCH_ERROR;
+ io_kind_name (k), warn,
+ &dt->delim->where))
+ return false;
io_constraint (k == M_READ,
"DELIM= specifier at %L not allowed in a "
"READ statement", &dt->delim->where);
-
+
io_constraint (dt->format_label != &format_asterisk
&& dt->namelist == NULL,
"DELIM= specifier at %L must have FMT=*",
"NML= specifier", &dt->delim->where);
}
}
-
+
if (dt->namelist)
{
io_constraint (io_code && dt->namelist,
io_constraint (dt->eor && not_no && k == M_READ,
"EOR tag at %L requires an ADVANCE = %<NO%>",
- &dt->eor_where);
+ &dt->eor_where);
}
- expr = dt->format_expr;
- if (!gfc_simplify_expr (expr, 0)
- || !check_format_string (expr, k == M_READ))
- return MATCH_ERROR;
+ if (k != M_READ)
+ {
+ io_constraint (dt->end, "END tag not allowed with output at %L",
+ &dt->end_where);
- return m;
-}
+ io_constraint (dt->eor, "EOR tag not allowed with output at %L",
+ &dt->eor_where);
+
+ io_constraint (dt->blank,
+ "BLANK= specifier not allowed with output at %L",
+ &dt->blank->where);
+
+ io_constraint (dt->pad, "PAD= specifier not allowed with output at %L",
+ &dt->pad->where);
+
+ io_constraint (dt->size, "SIZE= specifier not allowed with output at %L",
+ &dt->size->where);
+ }
+ else
+ {
+ io_constraint (dt->size && dt->advance == NULL,
+ "SIZE tag at %L requires an ADVANCE tag",
+ &dt->size->where);
+
+ io_constraint (dt->eor && dt->advance == NULL,
+ "EOR tag at %L requires an ADVANCE tag",
+ &dt->eor_where);
+ }
+
+ return true;
#undef io_constraint
+}
/* Match a READ, WRITE or PRINT statement. */
gfc_symbol *sym;
int comma_flag;
locus where;
- locus spec_end, control;
+ locus control;
gfc_dt *dt;
match m;
get_io_list:
- /* Used in check_io_constraints, where no locus is available. */
- spec_end = gfc_current_locus;
-
/* Save the IO kind for later use. */
dt->dt_io_kind = gfc_get_iokind_expr (&gfc_current_locus, k);
if (flag_dec_format_defaults)
dt->dec_ext = 1;
- /* A full IO statement has been matched. Check the constraints. spec_end is
- supplied for cases where no locus is supplied. */
- m = check_io_constraints (k, dt, io_code, &spec_end);
-
- if (m == MATCH_ERROR)
- goto cleanup;
+ /* Check the format string now. */
+ if (dt->format_expr
+ && (!gfc_simplify_expr (dt->format_expr, 0)
+ || !check_format_string (dt->format_expr, k == M_READ)))
+ return MATCH_ERROR;
new_st.op = (k == M_READ) ? EXEC_READ : EXEC_WRITE;
new_st.ext.dt = dt;
RETM m = match_etag (&tag_file, &inquire->file);
RETM m = match_ltag (&tag_err, &inquire->err);
RETM m = match_etag (&tag_iomsg, &inquire->iomsg);
- if (m == MATCH_YES && !check_char_variable (inquire->iomsg))
- return MATCH_ERROR;
RETM m = match_out_tag (&tag_iostat, &inquire->iostat);
RETM m = match_vtag (&tag_exist, &inquire->exist);
RETM m = match_vtag (&tag_opened, &inquire->opened);
RETM m = match_vtag (&tag_write, &inquire->write);
RETM m = match_vtag (&tag_readwrite, &inquire->readwrite);
RETM m = match_vtag (&tag_s_async, &inquire->asynchronous);
- if (m == MATCH_YES && !is_char_type ("ASYNCHRONOUS", inquire->asynchronous))
- return MATCH_ERROR;
RETM m = match_vtag (&tag_s_delim, &inquire->delim);
RETM m = match_vtag (&tag_s_decimal, &inquire->decimal);
RETM m = match_out_tag (&tag_size, &inquire->size);
RETM m = match_ltag (&tag_end, &wait->end);
RETM m = match_ltag (&tag_eor, &wait->eor);
RETM m = match_etag (&tag_iomsg, &wait->iomsg);
- if (m == MATCH_YES && !check_char_variable (wait->iomsg))
- return MATCH_ERROR;
RETM m = match_out_tag (&tag_iostat, &wait->iostat);
RETM m = match_etag (&tag_id, &wait->id);
RETM return MATCH_NO;
projects / thirdparty / gcc.git / blobdiff